The diagram below depicts three different circuits that light a bulb. The batteries are identical 1.5 V cells, and the light bulbs are identical.
1. Has 1 battery, 1 lightbulb in circuit
2. Has 2 battery, 1 lightbulb in circuit
3. Has 3 battery, 1 lightbulb in circuit
Which circuit has the greatest voltage drop across the light bulb?
Which circuit has the greatest current flow?
no idea, Do not see circuit.
a. circuit #3.
b. circuit #3.
I am assuming the 1.5v. batteries are connected in series.
If the 1.5v batteries are connected in parallel, the voltage and current in
all 3 circuits are equal.
To determine the circuit with the greatest voltage drop across the light bulb, you need to compare the voltages provided by the batteries in each circuit.
For the first circuit with one battery, the voltage drop across the light bulb will be 1.5 volts since that is the voltage of the single battery.
For the second circuit with two batteries, the voltage drop across the light bulb will be 3 volts. This is because the batteries are connected in series, which means their voltages add up.
For the third circuit with three batteries, the voltage drop across the light bulb will also be 3 volts. Like in the second circuit, the batteries are connected in series, so their voltages also add up.
Therefore, both the second and third circuits have the same greatest voltage drop across the light bulb, which is 3 volts.
To determine the circuit with the greatest current flow, you need to compare the currents passing through the light bulb in each circuit.
In a series circuit, the current is the same at all points. So, the current passing through the light bulb will be the same in all three circuits regardless of the number of batteries. Therefore, all three circuits have the same greatest current flow.